What is 3+4*5/2*3-7²+6/3? 

Firstly we do the powers, then multiplications and divisions, then additions and substractions. So:

3 + 4 * 5 / 2 * 3 - 7² + 6 / 3 =
= 3 + 4 * 5 / 2 * 3 + 49 + 6 / 3 =
= 3 + 20 / 2 * 3 + 49 + 6 / 3 =
= 3 + 10 * 3 + 49 + 6 / 3 =
= 3 + 30 + 49 + 2 =
= 33 + 51 =
= 84

At a constant it will take one hour to travel 32 mi.at that speed it will take 1/2 hr to travel the remaining 16 mi.it will take 1+1/2 hr to travel the 48mi @ 32mph.so 1 hr = 60 min& 1/2 hr = 30 min1+1/2 hr = 90 min.there are 60s in each 90 × 60 = 3600 seconds.the real question seriously is he why are they driving so slow? ! lol.